Write a program in python that checks if a word supplied as the argument is an Isogram. An Isogram is a word in which no letter occurs more than once. Create a method called is_isogram that takes one argument, a word to test if it's an isogram. This method should return a tuple of the word and a boolean indicating whether it is an isogram. If the argument supplied is an empty string, return the argument and False: (argument, False). If the argument supplied is not a string, raise a TypeError with the message 'Argument should be a string'. For example: is_isogram("abolishment") Expected Result: ("abolishment", True)